Boron phosphate catalyst for the production of dienes from aldeh

Details Boron phosphate catalyst for the production of dienes from aldeh Boron phosphate catalyst for the production of dienes from aldeh

1986-01-22

1986-12-30

Metz, Andrew H.

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Boron or compound containing same

502174, 502200, B01J 2102, B01J 2118, B01J 2224

Patent

active

046329137

ABSTRACT:
This invention is concerned with improved boron phosphate dehydration catalysts. More specifically this invention is directed to a process for the conversion of an aldehyde to a diolefin comprising contacting an aldehyde of 4 to 6 carbon atoms in the vapor phase with a catalyst comprising boron phosphate wherein the boron phosphate has been treated with an ammonium carbonate or bicarbonate salt prior to calcination. This invention is also concerned with a large pore catalyst for dehydration reactions wherein the improvement comprises the use of a catalyst with a molar ratio of P/B of about 1.0 modified with from 0.1 to 10 mole percent, based on moles of boron, of a carbonate salt selected from (NH.sub.4).sub.2 CO.sub.3 and NH.sub.4 HCO.sub.3.

REFERENCES:
patent: 3030314 (1962-04-01), Knowtton et al.
patent: 3395984 (1968-08-01), Collins
patent: 3849335 (1974-11-01), Immel et al.
patent: 4524233 (1985-06-01), Hsu et al.
patent: 4547614 (1985-10-01), Vorene
The Rule of Surface Activity of BP 04 in the Activity and Selectivity of the Dehydration of Alcohols, S. S. Jewur et al., J. of Cat. 57, pp. 167-176, 1979.
Bol'Shakov et al, Prom-St. Sint Kewich, 1980 (8), 2-4.

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